Mendel called a trait that is maskedMultiple Choicehomozygous.heterozygous.dominant.recessive.No answer is correct.

Breakdown of the Problem

1. Identify the concept of dominance in Mendelian genetics.
2. Understand the definitions of the provided options.

Relevant Concepts

• Dominant Trait: A trait that masks the effect of another trait. It is expressed in the phenotype even when only one allele is present.
• Recessive Trait: A trait that is masked by the presence of a dominant trait. It is only expressed when two recessive alleles are present.
• Homozygous: Refers to having two identical alleles for a particular gene.
• Heterozygous: Refers to having two different alleles for a particular gene.

Analysis and Detail

• When Mendel discusses traits that are masked, he refers to recessive traits. A recessive trait will only manifest when an organism has two copies of the recessive allele, meaning that the presence of a dominant allele will suppress the expression of the recessive one.

Verify and Summarize

• Dominant traits typically overshadow recessive traits, making recessive the correct term for traits that are masked in the presence of dominant traits.

Final Answer

Recessive.